Improvement in stop-motions for spinning or twisting machines



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Stop-Motion for Spinning or Twisting Maohines. No. 209,694. PatentedNov. 5,1878.

WITNESSES JMZ M N. PETER/5, PHOTOI-UTHOGRAPMER. WASHlNGTN. D. G

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JQHfKNOW LESL g. or Twisting Maoh-inst Patented Nov. 5, 1878,.

Stop-Motion for Spinnin .NO. 209,694.

Q I akin mint N-PHSM PNOTO-UTNDGRAPHER. WAQHXNO'TON. D. O.

NITED i i? TATES IMPROVEMENT lN STOP-MOTIONS FOR SPINNING 0R TWlSTINGMACHINES.

Specification forming part of Letters Patent No. 209,694, dated November5, 1878; application filed April 13, 1878.

To all whom it may concern:

Motions for Spinning or Twisting Machines and I do hereby declare thefollowing to be a full, clear, and'exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use it, reference being bad to the accompanying drawings, whichform part of this specification, in which- Figure 1 is a transversevertical view of a twisting -machine with my improvements appliedthereto. Fig. 2 is a detail side elevation of the whirl and bracket Land lever K. Fig. 3 is a rear end view of the same. Fig. 4 is apartly-sectional view of the same. Figs. 5 and 6 are detail verticalpart sections of the dropping mechanisms which raise the upperdrawing-roll and lowerthe lever K to stop thespindle. Fig. 7 is a planview of the same. Figs. 8, 9, 10, and 11 are detail views- Figs. 12 and13 are detail views showing a modification of the notched plate or barfor supporting the rods M.

My invention has relation to spinning and twisting machines, and has forits object to provide means for stopping the drawing or feeding rolls,and the fly or twisting-spindles when a thread or yarn being spun ortwisted breaks.

The first part of my improvements relates to means for stopping thefeeding of the thread; and consists, generally, in the novelconstruction and combination of devices so arranged and operated thatwhen a thread breaks the top drawing or feeding roll will be elevated,and a cessation of feed thereby produced.

The secondpart of my improvements relates to means for stopping the flyor twisting-spindle; and consists, generally, in the novel combinationof devices including afriction-brake, which, when athread or yarnbreaks, will fall by gravity onto a whirl or disk on the spindle and be,by the drawing action of said whirl, so drawn in and wedged between thelatter and its own pivotal support, or other rigid bar or brace, as tostop the spindle.

My improvements further consist in certain details of constructionhereinafter more fully set forth.

Referring tothe accompanying drawings, A designates a spinning-frame, Band O the top and bottom drawing or feeding rolls, and D the fly ortwisting spindles. E represents a stand, consisting of a U-shapedcasting, sc-

-cured on the frameA, there being a stand of this character for each oneof the spindles D. F F are levers pivoted'at f f in said stand, theiropposite extremities being pivoted at f f to bars G G, which havewedge-shaped or taper ends 9 g, formed with shoulders g Said taper barsG are curved at 9 near their junction with the levers F, and rest in thebifurcated ends it h of arms H H, which are secured at h h to the sidestandards of the stand E. Said bars are arranged relatively to thedrawing or feeding rolls B 0, so that when moved forward sufliciently tocome into the bite of said rolls, or present their diminished ends orpoints thereto, they will be drawn in between said rolls until theshoulders g g vmeet the lower roll,"B, the effect bein g that the toproll, 0, is raised and the drawing or feeding of the yarn or threadstopped. The circumstance under which said taper bars will'be thuspresented to and drawn in between said rolls will be described fartheron.

I represents the whirl or pulley on the fly or twistingspindle D. K is alever, swiveled at 70 in a bracket, L, which said bracket is secured tothe bolster-rail A by a bolt, 1, and made vertically adjustable by meansof a setscrew, l. Said lever K has a segmental face, K described from acenter different from k, so that the distance between 70 and the end kof said segment will be less than the distance from 70 to any otherpoint of said segment.

The proportions of said segment with refer-- ence to the distancebetween the pivot 70 and the upper side of the whirl I are so regulatedthat when the lever K swings downwardly the point 70 will not come incontact or will just barely touch said upper side of the whirl,

the farther downward swinging of said lever bringing the center ormiddle of the segment in contact with the upper side of said whirl, soas to cause said lever to be drawn in and wedged between the pivot 70and said whirl. The conditions which will produce this depression of thelever, its frictional contact with and drawing in by the whirl, so as towedge between the latter and the pivot k, thereby stopping the spindleD, will be explained later on in this specification.

M M are thread-rods, of which any desired number may be employed in eachof the stands E. Each of these rods is bent at either end, forming shortbends m m, respectively, and these bends are again curved or bent toform eyes m and hooks m Arod, N, connects the upper ends of the sides ofthe stand E, and upon this the rods M are loosely swung, said rod Npassing through the eyes m The threads to be wound upon the spindles Dpass through the hooks on, holding the rods M elevated, and thencethrough a guide, 0, to the rolls B O.

P is a rod parallel with the rod N and swung upon the latter, its ends19 12 having eyes or openings for the passage of said rod N. The rod Pmay be swung to and fro beneath the rod N, the extent of its movementbeing limited by stops 6 e on one of the sides of the stand E, Fig. 11.

P is a ratchet or detent of peculiar form, made fast to or integral withthe end or head 19. This ratchet has a shoulder, 19 cut down to a linebelow the center of the rod N, and a tooth, p.

Q is a latch pivoted to one of the levers F, and arranged to engage withthe ratchet P, as hereinafter set forth. F is a handle fast on one ofthe levers F, and N is a notched plate secured to and extending betweenthe arms of the stand E E, its object being toprevent the thread-rods Mfrom descending too far under circumstances hereinafter to be referredto.

The operation is substantially as follows: The threads to be wound onthe spindles D proceeding from spools or bobbins l 2 3, &o., passbeneath the hooks m thence through a guide, 0, to the rolls B O, andfrom the latter to said spindles D. When the spinning or twistingoperation is proceeding the several parts described occupy the relativepositions shown in Figs. 1 and 5, the thread-rod M being held up, asshown, by the tension of the threads, the rolls B and 0 being infrictional contact, the taper bars G held back from said rolls by theengagement of the latch Q with the ratchet P, and the lever K out ofcontact with the whirl I by meansof a wire or cord, K having a hook, 70which enters one of a series of adjusting-holes, W, in said lever, theother end of said wire or cord being fastened to a rigid arm, Fprojecting from one of the levers F. As long as the spinning proceedswithout one of the threads breaking or running out the positions ofthese several parts will remain unchanged. When, however, a threadbreaks, the rod M, which it sustained by its-tension, falls, swingingdownward on the rod N. In falling the shoulder at meets the rod 1,pushing it back and causing the ratchet P to be turned so far that thelower part or line of the shoulder 12 will come above the center of therod N. This causes the latch Q to be thrown off the ratchet P, or toloose its engagement with the shoulder 10, so that the levers F F arepermitted to fall, as their gravity impels them, toward the rolls B C.The thin ends of the taper bars G are thus presented to said rolls,which latter draw said bars between them until the shoulder g meets theroll B, at which time the roll 0 is elevated out of contact with thesaid lower roll, the feeding of the thread being thereby stopped. Theforward motion of the lever F depresses the outer end of the arm Fthereby permitting the lever K to fall until its segmental face comesinto contact with the top side of the whirl. The mere frictional contactor gravity of said lever K would have but slight effect upon the whirlwere it not that such contact causes the whirl to draw in said lever andwedge it, as already described, such wed ging action having the efl'ectof speedily stopping the spindle. To nicely adjust the stopping of thespindle with reference to the elevation of the top roll, 0,adjusting-holes 7a or other appropriate means of adjustment may beprovided.

The falling of a rod, M, which was supported by the thread before thelatter broke, and the described motions of the taper bars G and lever Khave no effect upon the remainin g rods M, which are held up by theunbroken thread, so that when said broken thread is repaired, and thefeed-rollers and spindle are again set in operation, work may heproceeded with. To resume work after repairing a broken thread thehandle F is taken hold of and the levers F F pushed toward the stand E,the latch Q being caused to engage, as before, with the detent P, thepoint of said latch passing down over the shoulder 19 to the angle 19below the center of shaft N. This withdraws the taper bars G frombetween the rollers B G and lifts the segmental face of the lever K fromcontact with the upper side of the whirl I, whereupon the action of saidrollers and of the spindle D is resumed.

Should all the bobbins of the creel which feeds the spindle D be run outat the same time, it would be desirable to permit said spindle to rotatefreely, so as to avoid the friction and heat consequent upon the rubbingof the driving-bands on a stationary whirl. The running out of thebobbins having caused the rods M to drop, the detent 1? becomes turned,so that if the levers F be moved back without lifting said rods thelatch Q will automatically engage with the tooth 2 as shown in dottedlines in Fig. 6. Hence, when this engagement takes place, though therods M are then lowered and resting on the bar N, the spindle D is freeto rotate, and no movement of said rods M will then affect the rotationof the spindle to stop it or will cause the taper bars G to be presentedto the bite of the rolls 3 0.

When for any cause it is desirable to use less than the whole number ofthread-rods in a stand, the rod or rods not in use may be swung over tothe back of the stand, as shown at b in Fig. 5. In this position the rodM will not come in contact with the rod N, its bend m throwing it out ofcontact, and hence the rolls B G and spindle D are not stopped thereby.

The slotted or notched bar or plate N not only supports the thread-rodsM, so as to prevent said rodsfrom falling too far when threads break,but also prevents said rods from being drawn into interference witheachother by reason of the convergence of. said threads in the guide 0.As a substitute for the notched bar or plate N the device 0, consistingof a corrugated bar, may be einployed,the threads resting separately inthe corrugations o, whereby they are prevented from converging ordrawing their rods M toward each other. When this thread-guideis'employed a plain rod or bar, a, as shown in Fig. 12, which need notbe slotted or notched for the reception of the rods M, may be used inlieu of the slotted plate.

What I claim as my invention is 1. In combination with the lever F,latch Q, and shaft N, the ratchet or detent P, havin g a shoulder, 19out to a point or line below the center of said shaft, substantially asdescribed, whereby, when the point of the latch is below the center ofthe shaft, said latch will be retained in such position, but when thedetent is slightly oscillated said shoulder will raise the point of thelatch above the center of the shaft, as described, so that the pullin gof the latch will further oscillate the detent until latch and detentare disengaged, as set forth.

2. The combination of stand E, levers F,

4. The combination of taper bars G, levers I F and K, whirl I, latch Q,detent P, and appurtenant mechanism, substantially as described,completing connection between said taper bars and levers, whereby aslight movement of the detent will effect a disengagement of latch anddetent and allow the levers to fall by their own gravity, as and for thepurpose set forth. a

5. The lever K, having segmental face, as described; in combination withthe whirl or disk I, the spindle D, bracket L, bolster-rail A, andconnecting and operating mechanism,

arranged substantially as described, so that after frictional contact ofthe face of'the lever with the whirl or disk the motion of said Y,

whirl or disk shall cause the lever to wedge and stop the spindle, asset forth.

In testimony that I clainl'the foregoing I have hereunto set my handthis 12th day of April, 1878.

JOHN HENRY KNOWLES. Witnesses:

SAML. J. VAN STAVOREN, OHAs. F. VAN HORN.

